— pneumatolytic, pneumatolitic /noo mat'l it"ik, nyoo-, nooh'meuh tl-, nyooh'-/ , adj.
/nooh'meuh tol"euh sis, nyooh'-/ , n. Geol.
the process by which rocks are altered or minerals and ores are formed by the action of vapors given off by magma.
[ 1895-1900; PNEUMATO- + -LYSIS ]